19147180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73643}}^1$

素因数の和:73665

約数の個数: 24

約数和(自身を含む): 43302672

約数和(自身を除く): 24155492

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 73643, 147286, 294572, 368215, 736430, 957359, 1472860, 1914718, 3829436, 4786795, 9573590, 19147180]

約数ペア:

[(1, 19147180), (2, 9573590), (4, 4786795), (5, 3829436), (10, 1914718), (13, 1472860), (20, 957359), (26, 736430), (52, 368215), (65, 294572), (130, 147286), (260, 73643)]